i suppose you could but trust me, theyre not going to make it out of that pot together and alive. the root systems are way too tangled to even attempt pulling apart. the stress on both plants would be enough to kill them both.
if it were me id pick the healthiest least stretchy plant(they look about the same, coin toss maybe? jk id keep the one with cotyledons and kill the other one) and transplant into a 3g pot. then start germinating more seeds.
but thats just me, you can wait for someone elses advice if you want to